Key statistics
Satellite CZ-4B R/B at a glance.
Uptime
7931
Days in orbit
Revolutions
≈ 14.5
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.7
Latest
Satellite identification and parameters
Extended collection of information and parameters for CZ-4B R/B.
Object identification
Identified? True
Debris? False
Object name: CZ-4B R/B
International designator: 2003-049C
Object number (NORAD): 28059
Object ID (CCSDS): 28059
Country: PEOPLES REPUBLIC OF CHINA (PRC)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 98.989 minutes
Inclination: 98.6601 deg
SMA: 7088.468 km
Apoapsis: 743.818 km
Periapsis: 676.849 km
RAAN: 169.6386 deg
Eccentricy: 0.0047238
Argument of periapsis: 258.6094 deg
Mean anomaly: 100.9793 deg
Mean motion: 14.54702372 rev/day
Mean motion (dot): 0.00000223 rev/day2
B* drag term: 0.0000634 1/REarth
Two-line elements (TLE)
Creation date: July 8, 2025, 2:27 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 7, 2025, 9:16 p.m. UTC
TLE line 0: 0 CZ-4B R/B
TLE line 1: 1 28059U 03049C 25188.88658112 .00000223 00000-0 63400-4 0 9997
TLE line 2: 2 28059 98.6601 169.6386 0047238 258.6094 100.9793 14.54702372151004
Live tracking on map
Real-time ground track for satellite CZ-4B R/B.
In-orbit conjunctions
A list of the most updated potential collisions computed for object CZ-4B R/B.
Associated space launch
The satellite is China's first operational civilian remote-sensing satellite, specifically designed for the Chinese Ministry of Land and Resources (MLR).
CZ-4B R/B was lifted into orbit during the mission ‘Long March 4B | Zi Yuan 1-2’, on board a Long March 4B space rocket.
The launch took place on Oct. 21, 2003, 3:16 a.m. from Launch Complex 7.
For more information about the launch, click the button.
Long March 4B | Zi Yuan 1-2
Agency: N/A
Status: Launch Successful
Launch date: Oct. 21, 2003, 3:16 a.m. UTC
Rocket: Long March 4B
Launch pad: Launch Complex 7
Location: Taiyuan Satellite Launch Center, People's Republic of China
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